Removal

• Before starting work, remove all components installed on the plywood sheet as well as any membrane laid over it.
• Partial membrane removal for plywood replacement. Full sheet removal: Unscrew all perimeter screws holding the sheet. Gently pry the plywood from underneath and lift it up around the edges.
• Partial plywood removal (damaged area): Place a new sheet over the damaged section and trace its outline with a marker. Use a circular saw to carefully cut along the traced lines. Use a multitool for cutting corners.

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Set the circular saw depth to match the thickness of the existing plywood to avoid cutting wires or damaging the roof structure

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Roof Interior Inspection

• Check the internal roof structure. Inspect the framing for rot or cracks — major repairs may be needed.

Preparation

• Sheet cutting: When replacing a full sheet, measure the needed size, cut the plywood to fit, and mark out any openings in advance.
• Framing layout: On the face of the plywood sheet, mark where the roof framing is located to make screw placement easier during installation.
• Cut inaccessible openings ahead of time — such as for refrigerator vents, antennas, and plumbing vent pipes.
• Trim plumbing vent pipes flush to the roof surface to avoid interference with membrane or mesh installation.
• Cut remaining openings with a multitool after installing the membrane or fabric + silicone system. Be sure to protect the RV interior from dust by covering it with plastic sheeting beforehand.
• Remove any nails or staples from the surface before installing the new sheet.